||extended coordination view
||26. Feb 2008
||ISG meeting in Prague
|summary||Consistent export of shells by having each vertex defined only once and shared by edges
For each IfcClosedShell and IfcOpenShell, used e.g. in IfcFacetedBrep, or in IfcShellBasedSurfaceModel, each vertex shall only be exported once. Edges shall share identical vertices.